feed and speed calculater

[geo427]

When letting mcam calculate feeds and speeds for you ,do you find them usefull only as a starting point and fine tune them ,or are they close enough to use them in your operations?

thanks for your input.

[Elad]

Not even close.

Don't use it!

the deault feed and speeds that in the tool library is not good.if you don't have the experiance to know the speeds and feeds,use other calculators or books.

[Charles Davis]

Actually the Speed/Feed/Material library in Mastercam is quite sophisticated and will give very good starting data (as well as you are apt to get anywhere); though most people don't really know how it works or how to use it.

 

There are two ways of calcing S & F, use the Material Library, or direct from the tool (a setting in Job Setup).

 

If you use the Material library, basically, it works like this:

1. Assigns a BASE SFM and Chip Load for a material

2. Applies a % multiplier to the SFM based on the operation type (example: contour is 100% of base, drilling may be 60% of base).

3. Applies a % multiplier to the Chip Load based on the tool type (example: Center drill may be 100% of base, Reamer may be 160% of base).

4. Applies a multiplier to the results above based on the tool material (example: 100% for HSS, 130% for Carbide).

 

If you don't like the SF's you're getting, go into the material library, and monkey with these settings. It will give very good results if set up properly.

 

Given the HUGE number and combinations of materials, tool types, tool sizes, and tool materials, it's hard to see how a more elegant solution to the problem could be devised.

[Hugh.Venables]

There was a thread on this a month or two ago. I was quite surprised by the number of highly competent Mastercam users who manually calculate their own speeds and feeds. I would think the folk at CNC Software must be a little disappointed but then again, I haven't managed to do anything very useful with what's available in Mastercam myself. Maybe there needs to be a tutorial set up somewhere to help set it up properly.

Hugh Venables.

[Fig sign]

I am going to agree with Elad.

For me it is a waste of time .

I made my own tool tables for different materials and this is my starting point.

It doesn`t take a lot of time to save to a tool table the new tool you are using the first time.

[Elad]

"I made my own tool tables for different materials and this is my starting point."

 

Alex,

will you send me your tool library to have a look??

 

[ 11-18-2002, 04:33 AM: Message edited by: elad ]

[Fig sign]

Elad!

Just make me a call and give me your e-mail.

And I will send you a bunch of them.

[Elad]

Alex,

 

Forgot your phone number

Give me your number again or email it to me :

[email protected]

 

Thanks,

[Roger Peterson]

The duramill material and tool libraries have a lot of the initial tweeking done for you as far as what type of tool you are using. Check them out I would like to hear what other people have to say.

[Hugh.Venables]

Roger, where are these duramill material and tool libraries?

Hugh Venables